Hi Marj,
Just wanted to let you know that I have similar issues with my nasal passages. I went to an allergist a couple of years ago and she told me she thought I had LPR and needed to see a GI doctor. Since I was already being treated for GERD with PPIs, I never bothered to go back to GI until now. Perhaps an ENT doctor would be more beneficial, although everything I've read about LPR seems to indicate that all they do is put you on PPIs. I'm starting to think, though, that if you (and me) have acid coming up as far as the sinuses then we probably need an ENT assessment to look at potential damage in the larynx (which I don't believe a normal upper endoscopy can do).
It's frustrating walking around with inflamed sinuses all day! Hope you feel better soon.
El